The material shall consist of a homogeneous mixture of technical alphacypermethrin, complying with the requirements of WHO specification 454/TC
(April 2006), together with filler(s) and any other necessary formulants. It shall be in the form of a freely flowing fine powder, free from visible extraneous matter and hard lumps.

PH Range

5 to 8

Pourability

Maximum “residue”:3%

Spontaneity of dispersion

A minimum of 60% of the alpha-cypermethrin content found in the suspension after 5 min in CIPAC standard water D at 30 ± 2°C.

Suspensibility

A minimum of 60% of the alpha-cypermethrin content found shall be in the suspension after 30 min in CIPAC standard water D at 30 ± 2°C.

Wet sieve test

Maximum: 2% of the formulation shall be retained on a 75 μm test sieve.

After storage at 54 ± 2°C for 14 days the determined average active ingredient content must not be lower than 95%, relative to the determined average content found before storage, and the product shall continue to comply with the clauses for:
– pH range
– Pourability
– Spontaneity of dispersion
– Suspensibility
– Wet sieve test